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V506. Pointer to local variable 'X' is …
Analyzer Diagnostics
General Analysis (C++)
General Analysis (C#)
General Analysis (Java)
Diagnosis of micro-optimizations (C++)
Diagnosis of 64-bit errors (Viva64, C++)
MISRA errors
AUTOSAR errors
Additional information
Contents

V506. Pointer to local variable 'X' is stored outside the scope of this variable. Such a pointer will become invalid.

Dec 15 2011

The analyzer found a potential error related to storing a pointer of a local variable. The warning is generated if the lifetime of an object is less than that of the pointer referring to it.

The first example:

class MyClass
{
  size_t *m_p;
  void Foo() {
    size_t localVar;
    ...
    m_p = &localVar;
  }
};

In this case, the address of the local variable is saved inside the class into the m_p variable and can be then used by mistake in a different function when the localVar variable is destructed.

The second example:

void Get(float **x)
{
  float f;
  ...
  *x = &f;
}

The Get() function will return the pointer to the local variable that will not exist by the moment.

This message is similar to V507 message.

This diagnostic is classified as:

You can look at examples of errors detected by the V506 diagnostic.

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